1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
#include "Proxy_Handler_Connector.h"
// $Id$
Proxy_Handler_Connector::Proxy_Handler_Connector (void)
{
}
// Override the connection-failure method to add timer support.
// Note that these timers perform "expoential backoff" to
// avoid rapidly trying to reestablish connections when a link
// goes down.
int
Proxy_Handler_Connector::handle_close (ACE_HANDLE sd, ACE_Reactor_Mask)
{
ACE_Connector<Proxy_Handler, ACE_SOCK_CONNECTOR>::AST *stp = 0;
// Locate the ACE_Svc_Handler corresponding to the socket descriptor.
if (this->handler_map_.find (sd, stp) == -1)
ACE_ERROR_RETURN ((LM_ERROR, "(%t) can't locate proxy %d in connector map, %p\n",
sd, "find"), -1);
Proxy_Handler *proxy_handler = stp->svc_handler ();
// Schedule a reconnection request at some point in the future
// (note that proxy_handler uses an exponential backoff scheme).
if (ACE_Service_Config::reactor ()->schedule_timer
(proxy_handler, 0, proxy_handler->timeout ()) == -1)
ACE_ERROR_RETURN ((LM_ERROR, "(%t) %p\n",
"schedule_timer"), -1);
return 0;
}
// Initiate (or reinitiate) a connection to the Proxy_Handler.
int
Proxy_Handler_Connector::initiate_connection (Proxy_Handler *proxy_handler,
ACE_Synch_Options &synch_options)
{
char addr_buf[MAXHOSTNAMELEN];
// Mark ourselves as idle so that the various iterators
// will ignore us until we are reconnected.
proxy_handler->state (Proxy_Handler::IDLE);
// We check the remote addr second so that it remains in the addr_buf.
if (proxy_handler->local_addr ().addr_to_string (addr_buf, sizeof addr_buf) == -1
|| proxy_handler->remote_addr ().addr_to_string (addr_buf, sizeof addr_buf) == -1)
ACE_ERROR_RETURN ((LM_ERROR, "(%t) %p\n",
"can't obtain peer's address"), -1);
// Try to connect to the Peer.
if (this->connect (proxy_handler, proxy_handler->remote_addr (),
synch_options, proxy_handler->local_addr ()) == -1)
{
if (errno != EWOULDBLOCK)
{
proxy_handler->state (Proxy_Handler::FAILED);
ACE_DEBUG ((LM_DEBUG, "(%t) %p on address %s\n",
"connect", addr_buf));
// Reschedule ourselves to try and connect again.
if (synch_options[ACE_Synch_Options::USE_REACTOR])
{
if (ACE_Service_Config::reactor ()->schedule_timer
(proxy_handler, 0, proxy_handler->timeout ()) == 0)
ACE_ERROR_RETURN ((LM_ERROR, "(%t) %p\n",
"schedule_timer"), -1);
}
else
// Failures on synchronous connects are reported as errors
// so that the caller can decide how to proceed.
return -1;
}
else
{
proxy_handler->state (Proxy_Handler::CONNECTING);
ACE_DEBUG ((LM_DEBUG,
"(%t) in the process of connecting %s to %s\n",
synch_options[ACE_Synch_Options::USE_REACTOR]
? "asynchronously" : "synchronously", addr_buf));
}
}
else
{
proxy_handler->state (Proxy_Handler::ESTABLISHED);
ACE_DEBUG ((LM_DEBUG, "(%t) connected to %s on %d\n",
addr_buf, proxy_handler->get_handle ()));
}
return 0;
}
|
